Nursing bottle



Feb. 4, 1958 C.'E. HOLLAND 2,s22,102

NURSING BOTTLE Filed Aug. 5, 1954 are United tates NURSING BOTTLECharles Edward Holland, Belmont, Mass.

Application August 5, 1954, Serial No. 447,941

1 Claim. (Cl. 215-11) This invention relates to nursing bottles and inparticular to the type of bottle having a screw cap for retaining thenipple.

A number of bottles are now on the market of the so-called wide mouthtype. On this type of bottle the mouth is of approximately the samediameter as the bottle and the nipple extends across the entire month.The rim of the nipple is ordinarily secured by a screw cap consisting ofa ring which is internally threaded and is screwed on to the upper rimof the bottle. It has been found that these nipples secured in theconventional manner tend to pull out from under the ring if the nippleis pulled to one side. The chief object of this invention is to providea connection between the nipple and the bottle which produces a positiveclamping action on the rim of the nipple so that it cannot be pulledaway from under the ring.

Another object is to provide a nipple connection which is particularlyuseful on the unbreakable plastic type of bottle. These bottles aresomewhat more difiicult to conmeet the nipple to as they are not asdimensionally stable as glass bottles and tend to become distorted andchange their dimensions when repeatedly sterilized, or when heated. Theconnection here shown is intended to give a firm grip on the nipple evenwhen the bottle is somewhat distorted.

In the drawings illustrating the invention:

Fig. 1 is a side view of the bottle with the nipple attached;

Fig. 2 is an enlarged vertical cross-section, partly broken away,showing the nipple and bottle connection;

Fig. 3 is a plan view of the nipple;

Fig. 4 is a view of the under side of the nipple; and Fig. 5 is a viewof the under side of the connecting ring.

2,822,102 Patented Feb. 4, 1958 The bottle 10 is of generallycylindrical shape and is preferably made of an unbreakable, somewhatflexible plastic which will withstand the heat of sterilizing. Thebottle has an externally threaded portion 11 to which an internallythreaded ring 12 is screwed in the usual manner. The ring 12 has aninwardly extending flange 13 which extends over the upper edge of thebottle and the rim 15 of the nipple 14.

The upper edge 16 of the bottle is bevelled to form a a sharp lip 17around the inner part of the upper rim. The rim 15 of the nipple has agroove 18 on the under side into which the edge 17 of the bottle isfitted when the nipple is applied. The nipple rim also has acircumferential groove 19 on the upper side. The ring 12 has adownwardly projecting bead 20 which engages in the groove 19. The nippleis thus securely clamped between the sharp edge 17 and the flange 20 ofthe ring. The sharp edge bites into the soft rubber of the nipple. Thehead 20 also tends to push the outer part of the rubber rim down aroundthe bevelled edge of the bottle. This connection prevents the rim of thenipple from being dislodged by a sidewise pull. To allow for the entryof air into the bottle, vents are provided in the form of radial grooves21 on the under side of the rim of the nipple.

I claim:

A nursing bottle and nipple combination comprising: a bottle having anopen top, an externally threaded margin, and an upper edge bevelled toslope downward toward the outside of the bottle and to form a relativelysharp, upwardly projecting lip; a nipple of elastic material having arim with upper and under sides extending over said upper edge, said rimhaving on its under side a first circumferential groove in which saidlip is received, and, on its upper side, a second circumferential grooveentirely overlying and in vertical alignment with the first groove, anda ring having an internally threaded portion engaged with said margin,and a flange extending over said upper side, said flange having a beadengaged with said second groove and overlying and aligned with said lip,the bead and the lip being disposed to clamp and compress between themthe material of the nipple lying between said grooves.

References Cited in the file of this patent UNITED STATES PATENTS159,197 Mason Jan. 26, 1875 1,797,433 McCrea Mar. 24, 1931 2,599,630Hair June 10, 1952

